Please send me also some information about the conference that you are organizing. If you want material in electronic format, you can have a look at our website at: www.vocabulix.com . Enjoy it!Moreover, these conception goes with generations, it is almost biologically inherited, they are path from parent to child. As a result the a child has similar believes as his father or mother.Yes, depending on demand. Vocabulix is a free service, but no one wanted to finance the German voices yet, which cost a little bit, so we started with Spanish and English which has higher demand.